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SpaceX’s second Falcon Heavy launch slips into next week out of caution

(SpaceX)

Published

6 years ago

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Update: No official comment has been offered but sourced reports indicate that SpaceX’s second Falcon Heavy launch will slip from a target of April 7th into “next week”, April 8-14. The massive rocket’s critical static fire test has also been pushed from April 4th to 5th, allowing additional time for SpaceX engineers and technicians to verify Falcon Heavy’s health. Stay tuned as we get closer to that test ignition and SpaceX releasing an official launch date.

The first Block 5 variant of SpaceX’s Falcon Heavy rocket has rolled out to Launch Pad 39A for an inaugural launch that could occur as early as April 7th. Minor delays, however, are extremely likely for the second Falcon Heavy launch attempt ever, with the most likely dates resting closer to April 8-11.

With an appearance noticeably deviating from Falcon 9 Block 5’s more tuxedo-esque exterior, Falcon Heavy and its all-new boosters still sport the same polished white skin and some of the black, felt-like thermal protection that helps to make the upgraded boosters so reusable. That reusability will be tested to the extreme as few as two months after launch – assuming all goes well – with the US Air Force’s STP-2 mission, set to reuse both of Falcon Heavy Flight 2’s side boosters, B1052 and B1053.

Above all else, it should be noted that the likelihood of Falcon Heavy Flight 2’s actual launch date slipping is not to say that anything at all is technically or operationally wrong with the rocket or ground support equipment (GSE). Rather, it’s simply a dose of pragmatism for a launch date that was originally approved on the range alongside a static fire on March 31st. In other words, SpaceX was anticipating the need for approximately seven days between static fire and launch, a fairly believable target relative to Falcon Heavy’s first launch flow.

Even if SpaceX completes a flawless Falcon Heavy static fire immediately after the 6 pm EDT window opens, this would give company engineers and technicians less than 72 hours to turn the rocket around for launch as soon as 6:36 pm EDT on April 7th. That process involves a huge amount of work, including the actual static fire, safely detanking (removing propellant), returning to Pad 39A’s hangar, installing the payload fairing, ensuring payload health, rolling back out to the pad, and integrating the transporter with the launch mount. Throughout, many checks and double checks are made to ensure that everything is ready for flight.

Safely completing that work in ~72 hours is extremely difficult for Falcon 9, let alone a significantly modified Falcon Heavy preparing for the vehicle’s second launch attempt ever. For reference, excluding a few outlier launches, Falcon 9 Block 5’s mean time between static fire and launch is ~4.7 days, while the mode is 5 days (6/10 launches). Outliers include missions like SSO-A, DM-1, and GPS III SV01, all of which required unique care and caution for various reasons. Chances are good that Falcon Heavy Flight 2 will probably improve upon Flight 1, which took several days to complete a static fire and 13 more days before a launch attempt. Still, the rocket is very unlikely to beat Falcon 9 Block 5’s average time-to-launch.

Falcon Heavy prepares for its inaugural launch, February 2018. (SpaceX)

All in good time

There is probably a 5% chance of Falcon Heavy launching on April 7th even if the static fire happens right on time and shows all systems running in the green. If SpaceX is unable to fit a static fire into the April 4th window, that will likely slip to 0%. Either way, we can expect SpaceX to provide an updated launch window or rough estimate as early as today, especially if the static fire test is successfully completed.

In the meantime, drone ship Of Course I Still Love You (OCISLY) – accompanied by a tug boat – is heading nearly 1000 km (620 mi) into the Atlantic Ocean to prepare for the attempted recovery of Falcon Heavy’s center core. In other words, it will likely be the fastest and farther a SpaceX booster has ever traveled while still attempting to land. Just Falcon Heavy’s launch debut, both side boosters will attempt to land back at Landing Zones 1 and 2 (LZ-1 & LZ-2) around 8-10 minutes after liftoff. The 6000-kg (~13,200 lb) Lockheed Martin-built Arabsat 6A satellite will be the rocket’s first commercial payload, likely heading to a high-energy geostationary transfer orbit.

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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SpaceX and Elon Musk explain potential reasons for Starship loss

Published

2 months ago

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January 17, 2025

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Credit: SpaceX

SpaceX and its CEO Elon Musk are starting to shed some light on the potential reasoning for the loss of Starship yesterday, which was lost after a successful launch and catch of the lower-stage booster.

Starship was lost during its ascension, and debris rained down over the Caribbean less than an hour after SpaceX lost all communication with the spacecraft.

A few hours after the launch was over, SpaceX started to shed some light after looking at preliminary data that the rocket left behind.

The company said that a fire developed in the aft section of Starship:

“Following stage separation, the Starship upper stage successfully lit all six Raptor engines and performed its ascent burn to space. Prior to the burn’s completion, telemetry was lost with the vehicle after approximately eight and a half minutes of flight. Initial data indicates a fire developed in the aft section of the ship, leading to a rapid unscheduled disassembly with debris falling into the Atlantic Ocean within the predefined hazard areas.”

Additionally, Musk said that there was some sort of oxygen or fuel leak in the cavity above the ship engine firewall.

The leak was evidently large enough to build more pressure than the vent was able to handle:

Some also seemed to recognize evidence of fires throughout the flight of Starship, which is obviously an anomaly:

There will be more information regarding the loss of Starship in the coming days and weeks, but Musk already believes that a bit of fire suppression and more volume in the cavity above the ship engine firewall could fix the issue.

“Nothing so far suggests pushing next launch past next month,” he said, so Flight 8 could happen sometime in February.

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SpaceX completes second catch of lower stage, but loses Starship

Published

2 months ago

on

January 16, 2025

By

Credit: SpaceX

SpaceX completed its seventh launch of Starship on Thursday, accomplishing a clean liftoff and catch of the first-stage booster. However, the upper stage was lost after its ascent.

The launch took place just a few minutes after 5 p.m. on the East Coast, as the first attempts at getting Starship in the air for the seventh time were delayed by weather both last week and this week.

Conditions were favorable on Thursday as SpaceX looked to follow up a successful campaign by Blue Origin, Jeff Bezos’s company, earlier today.

SpaceX went into the seventh Starship launch with plans for a catch attempt of the first-stage booster, something it attempted and completed during the fifth test launch last year. It decided to skip a catch attempt with the sixth test flight as conditions were not aligned.

For now, SpaceX is extremely selective as to when it attempts catches.

However, it was successful during this attempt, its second completed catch:

This flight differed from previous launches as SpaceX rolled out several improvements to the rocket and the processes as it featured plans to do a Starlink deployment simulation and had various adjustments to flap placement and avionics.

These plans were disrupted by the fact that SpaceX lost all communications with Starship about ten minutes into the flight, which the aerospace company confirmed was a result of losing the spacecraft sometime during its ascent.

Although the catch was successful, the loss of the actual rocket seemed to be a huge damper on the entire event. SpaceX confirmed several minutes after the loss of communications that the rocket was destroyed and was lost.

It was its first failure since the second Starship launch in November 2023. SpaceX had no answers for why the rocket was destroyed and lost.

We will keep you updated in the coming days.

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SpaceX confirms next Starship launch target – Here’s when it will take off

Published

2 months ago

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January 9, 2025

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spacex starship upper stage catch
Credit: Elon Musk | X

SpaceX has confirmed a new target date for the seventh Starship test launch after weather in Texas delayed the first scheduled date for “three or four days.”

The company is now targeting the launch for Monday, January 13, at 4 p.m. CST or 5 p.m. EST. The launch date is not set in stone as any variety of delays could impact this, but SpaceX hopes to finally take off after a delay that pushed it back from January 10.

What’s new with this Starship launch

With this being the seventh test launch of Starship, there are several things that the company will change and hope to accomplish. All of these launches are done in preparation for eventually taking flight to Mars, something that will happen next year, according to CEO Elon Musk.

First, SpaceX is rolling out a next-generation ship with “significant upgrades.” Forward flaps have been made smaller and are repositioned away from the heat shield, which will “reduce their exposure to reentry heating.”

SpaceX eyes 25 annual Starship launches starting next year

There is also a 25 percent increase in propellant volume, a new fuel feedline system for the Raptor vacuum engines, and a better-than-ever propulsion avionics module that will control the valves and reading sensors.

Avionics, as a whole, underwent a redesign and now have more capability and redundancy for missions as they become more complex.

Starlink test

SpaceX is also planning to deploy 10 Starlink simulators that are similar in size and weight to the next-generation Starlink satellites:

“While in space, Starship will deploy 10 Starlink simulators, similar in size and weight to next-generation Starlink satellites as the first exercise of a satellite deploy mission. The Starlink simulators will be on the same suborbital trajectory as Starship, with splashdown targeted in the Indian Ocean. A relight of a single Raptor engine while in space is also planned.”

Ship return and catch

There will be several experiments that have to do with returning Starship and various catch scenarios and sequences. One of which will see “a significant number of tiles be removed to stress-test vulnerable areas across the vehicle.”

The ship’s reentry profile was also intentionally designed to test the structural limits of the flaps while at the point of maximum dynamic pressure during reentry.

Currently, SpaceX did not detail whether it would attempt another catch during this test launch. These are usually game-time decisions.

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Please email me with questions and comments at joey@teslarati.com. I’d love to chat! You can also reach me on Twitter @KlenderJoey, or if you have news tips, you can email us at tips@teslarati.com.

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